Dr. Harekrishna Panigrahi

@chemical.kiit.ac.in

Assistant Professor in School of Chemical Engineering
Kalinga Institute of Industrial Technology (KIIT) Deemed to be University Bhubaneswar

Dr. Harekrishna Panigrahi


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https://researchid.co/harekrishnapanigrahi91

RESEARCH, TEACHING, or OTHER INTERESTS

Polymers and Plastics, Materials Science, Surfaces, Coatings and Films, Multidisciplinary
14

Scopus Publications

259

Scholar Citations

7

Scholar h-index

7

Scholar i10-index

Scopus Publications

  • Fuller's Earth Clay—Naturally Abundant, Environmentally Benign and a Low Cost Nano-Rod Shaped Clay Explored as a Potential Reinforcing Filler for Natural Rubber Latex
    Harekrishna Panigrahi, Nikita Aich, Aarti Kumari, Bhartendu Kumar, Rakesh Kumar, Dinesh Kumar Kotnees
    Polymer Engineering and Science, 2026
    The use of naturally abundant and unmodified Fuller's Earth (FE) nanoclay as a reinforcing nanofiller in prevulcanized natural rubber (PVNR) latex is explored in this work. Initially, the FE nanoclay has been extensively characterized for its chemical composition, structural, and morphological characteristics. PVNR/FE nanoclay composites with varying amounts of FE nanoclay have been prepared by a simple water‐based solution‐mixing method. Morphological analysis and structural analysis of the PVNR/FE nanoclay composites have been carried out to assess the dispersion and distribution of FE nanoclay in the PVNR matrix. A notable increment in the mechanical properties has been observed up to a certain loading of FE nanoclay, which corroborates its reinforcing effect in the PVNR matrix. Nevertheless, at higher concentrations of FE nanoclay, the rod‐shaped FE nanoclay particles start to aggregate in the PVNR matrix and consequently, the overall mechanical properties of the PVNR/FE nanoclay composites start to decrease. An increment in the glass transition temperature ( T g ) and the room temperature storage modulus ( G ′) of PVNR has been observed with the incorporation of FE nanoclay, which is attributed to the enhanced interactions between the PVNR rubber chains and the FE nanoclay particles. The TGA studies confirm that the PVNR/FE nanoclay composites show a reasonable increase in the thermal stability with the increase in the concentration of the FE nanoclay. This study clearly justifies the possibility of using the abundantly available unmodified FE nanoclay as an eco‐friendly and cost‐effective potential alternative nanoclay to other expensive and/or environmentally hazardous unmodified/modified nanoclays.
  • In Situ Synthesized Fe/Mg-Doped Polyaniline–Polyimide Composite Coating for Superior Corrosion Protection
    Sandeep Sekhar Pradhan, Jayanta Vishnu Bharati, Sagarika Padhan, Harekrishna Panigrahi, Tapan Kumar Rout, Smrutirekha Mishra
    ACS Applied Polymer Materials, 2025
    Conductive polymer has been extensively researched, specifically polyaniline (PANI), due to its unique properties such as stability and strong conductivity. However, the poor mechanical characteristics and weak solubility of the polyaniline restrict its potential uses, which affects its ability to prevent corrosion since it is prone to breaking. Modifying polyaniline into composites by the addition of different metals and cross-linking with different polymers is one technique that has shown notable achievements in both correcting weak stability and obtaining excellent mechanical characteristics. In this study, an in situ synthesized metal-doped polyaniline–polyimide (PANI-PI) composite coating is developed to enhance corrosion resistance. Herein, two different types of metals are doped with PANI, such as iron (F1-PANI, F3-PANI, F5-PANI) and magnesium (M1-PANI, M3-PANI, M5-PANI) with different weight percentages. The incorporation of metal dopants into the polyaniline enhances the passive film formation on metal substrates, reducing localized corrosion and increasing the charge carrier mobility within the polymer matrix, improving electron transfer kinetics in electrochemical applications. After, the metal-doped polyaniline has been incorporated into the polyimide matrix by in situ polymerization. To prepare polyimide composites, in situ polymerization of polyamic acid (PA) and metal-doped PANI (PA, PANI/PA, F5-PANI/PA, M5-PANI/PA) was performed. Further, it is coated on cold rolled cold annealed (CRCA) grade steel substrate and cured to prepare polyimide composite coatings. The polyimide matrix synergistically improves the coating’s conductivity, adhesion, and barrier properties. Polyimide ensures thermal and mechanical stability, while polyaniline provides active corrosion inhibition through redox behavior. Electrochemical impedance spectroscopy (EIS), potentiodynamic polarization studies, and salt spray tests confirm the superior anticorrosion performance of the synthesized coating. The metal-doped polyaniline–polyimide composite exhibits higher charge transfer resistance, reduced corrosion current density, and prolonged durability in aggressive environments.
  • Luminescent Carbon Dot-Graphene Oxide Epoxy Coatings: Enhanced Corrosion Protection and Detection
    Devashish Daksha, Tapan Kumar Rout, Amar Nath Bhagat, Bijoy K Satpathy, Smrutirekha Mishra, Harekrishna Panigrahi
    Langmuir, 2025
    A new hybrid material-based approach leveraging luminescent hybrid carbon dots (CDs)-functionalized graphene oxide (CDs-f-GO) integrated into epoxy coatings has been developed for enhanced anticorrosion protection and real-time corrosion detection. This study introduces, for the first time, a one-step process for synthesizing CDs-functionalized GO, which has been thoroughly characterized by using Fourier transform infrared spectroscopy, UV-visible spectroscopy, and fluorescence spectroscopy, confirming successful functionalization. UV-visible spectra revealed a characteristic absorption peak at 335 nm for CDs-f-GO, while fluorescence spectroscopy demonstrated excitation-dependent fluorescence with a red shift from 445 to 472 nm, distinguishing it from nonfluorescent GO. Electrochemical characterization, including electrochemical impedance spectroscopy and Tafel analysis, confirmed the superior anticorrosion performance of epoxy-CDs-f-GO coatings. Corrosion resistance was evaluated over time in a 3.5 wt % NaCl solution, revealing significantly higher charge transfer resistance and lower corrosion current density for epoxy-CDs-f-GO compared to neat epoxy and other composite coatings. The hybrid material exhibited the highest corrosion protection on both days 1 and 7, maintaining minimal degradation over time. The salt spray test on scratched coatings further validated the effectiveness of epoxy-CDs-f-GO, as minimal corrosion blistering was observed, indicating strong resistance against electrolyte penetration. Additionally, the developed coating demonstrated dual functionality by enabling real-time failure detection under UV light. Prominent carving marks were visible on the epoxy-CDs-f-GO coating, suggesting its potential for early detection of cracks or defects in steel structures. The combination of enhanced corrosion resistance and proactive maintenance capability makes this material a promising candidate for industrial applications, particularly in marine and other highly corrosive environments.
  • Multifunctional Self-Healing Carbon Dot-Gelatin Bioadhesive: Improved Tissue Adhesion with Simultaneous Drug Delivery, Optical Tracking, and Photoactivated Sterilization
    Maansi Aggarwal, Harekrishna Panigrahi, Dinesh Kumar Kotnees, Prolay Das
    Biomacromolecules, 2024
    Bioadhesives with all-inclusive properties for simultaneous strong and robust adhesion, cohesion, tracking, drug delivery, self-sterilization, and nontoxicity are still farfetched. Herein, a carbon dot (CD) is made to infuse each of the above-desired aspects with gelatin, an inexpensive edible protein. The CD derived through controlled hydrothermal pyrolysis of dopamine and terephthaldehyde retained –NH2, –OH, –COOH, and, most importantly, –CHO functionality on the CD surface for efficient skin adhesion and cross-linking. Facile fabrication of CD–gelatin bioadhesive through covalent conjugation of –CHO of the CD with –NH2 of gelatin through Schiff base formation was accomplished. This imparts remarkable self-healing attributes as well as excellent adhesion and cohesion evident from physicomechanical analysis in a porcine skin model. Improved porosity of the bioadhesive allows loading hemin as a model drug whose disembarkment is tracked with intrinsic CD photoluminescence. In a significant achievement, antibiotic-free self-sterilization of bioadhesive is demonstrated through visible light (white LED, 23 W)-irradiated photosensitization of the CD to produce reactive oxygen species for annihilation of both Gram-positive and Gram-negative bacteria with exceptional efficacy (99.9%). Thus, a comprehensive CD–gelatin bioadhesive for superficial and localized wound management is reported as a promising step for the transformation of the bioadhesive domain through controlled nanotization for futuristic clinical translations.
  • Carbon Dots and Their Polymeric Nanocomposites: Insight into Their Synthesis, Photoluminescence Mechanisms, and Recent Trends in Sensing Applications
    Dilip Kumar Kar, Praveenkumar V, Satyabrata Si, Harekrishna Panigrahi, Smrutirekha Mishra
    ACS Omega, 2024
    Carbon dots (CDs), a novel class of carbon-based nanoparticles, have received a lot of interest recently due to their exceptional mechanical, chemical, and fluorescent properties, as well as their excellent photostability and biocompatibility. CDs' emission properties have already found a variety of potential applications, in which bioimaging and sensing are major highlights. It is widely acknowledged that CDs' fluorescence and surface conditions are closely linked. However, due to the structural complexity of CDs, the specific underlying process of their fluorescence is uncertain and yet to be explained. Because of their low toxicity, robust and wide optical absorption, high chemical stability, rapid transfer characteristics, and ease of modification, CDs have been recognized as promising carbon nanomaterials for a variety of sensing applications. Thus, following such outstanding properties of CDs, they have been mixed and imprinted onto different polymeric components to achieve a highly efficient nanocomposite with improved functional groups and properties. Here, in this review, various approaches and techniques for the preparation of polymer/CDs nanocomposites have been elaborated along with the individual characteristics of CDs. CDs/polymer nanocomposites recently have been highly demanded for sensor applications. The insights from this review are detailed sensor applications of polymer/CDs nanocomposites especially for detection of different chemical and biological analytes such as metal ions, small organic molecules, and several contaminants.
  • The overall performance of graphene oxide-reinforced epichlorohydrin rubber nanocomposites
    Dilip Kumar Kar, Upala Dutta, Suyash Kumar, Smrutirekha Mishra, Harekrishna Panigrahi
    Journal of Rubber Research, 2024
  • Polypropylene-based thermoplastic elastomers: fundamental blending issues
    Harekrishna Panigrahi, Dinesh Kumar Kotnees
    Advances in Thermoplastic Elastomers Challenges and Opportunities, 2024
  • Jamming carbonaceous nanofiller in the continuous phase and at the blend interface for phenomenal improvement in the overall physico-mechanical properties of compatibilized thermoplastic elastomer
    Harekrishna Panigrahi, Dinesh Kumar K
    Polymer, 2022
  • Unveiling pressure-sensitive adhesiveness of a carbonized polymer dot
    Saptarshi Mandal, Harekrishna Panigrahi, K. Dinesh Kumar, Prolay Das
    Polymer, 2022
  • Effect of nanosilica concentration on the mechanical, viscoelastic and morphological properties of polypropylene/styrene- ethylene/butylene-styrene blend
    Advanced Polymeric Systems Applications in Nanostructured Materials Composites and Biomedical Fields, 2020
  • Carbon dots: Fluorescence active, covalently conjugated and strong reinforcing nanofiller for polymer latex
    P.R. Sreenath, Saptarshi Mandal, Harekrishna Panigrahi, Prolay Das, K. Dinesh Kumar
    Nano Structures and Nano Objects, 2020
  • Unique Compatibilized Thermoplastic Elastomer with High Strength and Remarkable Ductility: Effect of Multiple Point Interactions within a Rubber-Plastic Blend
    Harekrishna Panigrahi, Paradesiparampil R. Sreenath, Dinesh Kumar Kotnees
    ACS Omega, 2020
  • Unique approach to debundle carbon nanotubes in polymer matrix using carbon dots for enhanced properties
    P.R. Sreenath, Saptarshi Mandal, Seema Singh, Harekrishna Panigrahi, Prolay Das, Anil K. Bhowmick, K. Dinesh Kumar
    European Polymer Journal, 2020
  • Unique compatibilized thermoplastic elastomer from polypropylene and epichlorohydrin rubber
    Harekrishna Panigrahi, P.R. Sreenath, Anil K. Bhowmick, K. Dinesh Kumar
    Polymer, 2019

RECENT SCHOLAR PUBLICATIONS

  • Fuller's Earth Clay—Naturally Abundant, Environmentally Benign and a Low Cost Nano‐Rod Shaped Clay Explored as a Potential Reinforcing Filler for Natural Rubber Latex
    H Panigrahi, N Aich, A Kumari, B Kumar, R Kumar, DK Kotnees
    Polymer Engineering & Science , 2026
    2026
  • ZnO-Functionalized Carbon Dots/Poly (methyl methacrylate)-Grafted Natural Rubber Nanocomposites as an Efficient Absorbent for Industrial Dye Removal
    SS Nayak, S Padhan, J Gartia, S Mishra, DK Kotnees, H Panigrahi
    ACS Applied Engineering Materials 3 (11), 3834-3849 , 2025
    2025
    Citations: 1
  • In Situ Synthesized Fe/Mg-Doped Polyaniline–Polyimide Composite Coating for Superior Corrosion Protection
    SS Pradhan, JV Bharati, S Padhan, H Panigrahi, TK Rout, S Mishra
    ACS Applied Polymer Materials 7 (17), 11502-11513 , 2025
    2025
    Citations: 2
  • Luminescent Carbon Dot-Graphene Oxide Epoxy Coatings: Enhanced Corrosion Protection and Detection
    D Daksha, TK Rout, AN Bhagat, BK Satpathy, S Mishra, H Panigrahi
    Langmuir 41 (28), 18447-18462 , 2025
    2025
    Citations: 5
  • Bio-Nanocomposites Based on Polyvinyl Alcohol and Fuller Earth Nanoclay: Preparation, Properties and Its Application in Food Packaging.
    YA Ouma, SS Nayak, S Mishra, H Panigrahi
    Journal of Polymer Materials 41 (4) , 2024
    2024
    Citations: 4
  • Multifunctional self-healing carbon dot–gelatin bioadhesive: Improved tissue adhesion with simultaneous drug delivery, optical tracking, and photoactivated sterilization
    M Aggarwal, H Panigrahi, DK Kotnees, P Das
    Biomacromolecules 25 (5), 3178-3189 , 2024
    2024
    Citations: 15
  • Carbon dots and their polymeric nanocomposites: insight into their synthesis, photoluminescence mechanisms, and recent trends in sensing applications
    DK Kar, P V, S Si, H Panigrahi, S Mishra
    ACS omega 9 (10), 11050-11080 , 2024
    2024
    Citations: 75
  • The overall performance of graphene oxide-reinforced epichlorohydrin rubber nanocomposites: DK Kar et al.
    DK Kar, U Dutta, S Kumar, S Mishra, H Panigrahi
    Journal of Rubber Research 27 (1), 61-71 , 2024
    2024
    Citations: 5
  • Polypropylene-based thermoplastic elastomers: fundamental blending issues
    H Panigrahi, DK Kotnees
    Advances in Thermoplastic Elastomers, 177-216 , 2024
    2024
    Citations: 5
  • Jamming carbonaceous nanofiller in the continuous phase and at the blend interface for phenomenal improvement in the overall physico-mechanical properties of compatibilized …
    H Panigrahi, D Kumar
    Polymer 257, 125261 , 2022
    2022
    Citations: 10
  • Effect of Nanosilica Concentration on the Mechanical, Viscoelastic and Morphological Properties of Polypropylene/Styrene—Ethylene/Butylene—Styrene Blend
    H Panigrahi, S Mishra, AN Tiwari, MP Singh
    Advanced Polymeric Systems, 71-83 , 2022
    2022
  • Unveiling pressure-sensitive adhesiveness of a carbonized polymer dot
    S Mandal, H Panigrahi, KD Kumar, P Das
    Polymer 254, 125102 , 2022
    2022
    Citations: 7
  • Spectroscopy Analysis of Organic: Inorganic Hybrid Silica Particles
    H Panigrahi, S Mishra, SK Tripathy
    Sample Preparation Techniques for Chemical Analysis, 31 , 2021
    2021
    Citations: 1
  • Carbon dots: Fluorescence active, covalently conjugated and strong reinforcing nanofiller for polymer latex
    PR Sreenath, S Mandal, H Panigrahi, P Das, KD Kumar
    Nano-Structures & Nano-Objects 23, 100477 , 2020
    2020
    Citations: 30
  • Unique compatibilized thermoplastic elastomer with high strength and remarkable ductility: effect of multiple point interactions within a rubber-plastic blend
    H Panigrahi, PR Sreenath, DK Kotnees
    ACS omega 5 (22), 12789-12808 , 2020
    2020
    Citations: 32
  • Unique approach to debundle carbon nanotubes in polymer matrix using carbon dots for enhanced properties
    PR Sreenath, S Mandal, S Singh, H Panigrahi, P Das, AK Bhowmick, ...
    European Polymer Journal 123, 109454 , 2020
    2020
    Citations: 21
  • Unique compatibilized thermoplastic elastomer from polypropylene and epichlorohydrin rubber
    H Panigrahi, PR Sreenath, AK Bhowmick, KD Kumar
    Polymer 183, 121866 , 2019
    2019
    Citations: 46

MOST CITED SCHOLAR PUBLICATIONS

  • Carbon dots and their polymeric nanocomposites: insight into their synthesis, photoluminescence mechanisms, and recent trends in sensing applications
    DK Kar, P V, S Si, H Panigrahi, S Mishra
    ACS omega 9 (10), 11050-11080 , 2024
    2024
    Citations: 75
  • Unique compatibilized thermoplastic elastomer from polypropylene and epichlorohydrin rubber
    H Panigrahi, PR Sreenath, AK Bhowmick, KD Kumar
    Polymer 183, 121866 , 2019
    2019
    Citations: 46
  • Unique compatibilized thermoplastic elastomer with high strength and remarkable ductility: effect of multiple point interactions within a rubber-plastic blend
    H Panigrahi, PR Sreenath, DK Kotnees
    ACS omega 5 (22), 12789-12808 , 2020
    2020
    Citations: 32
  • Carbon dots: Fluorescence active, covalently conjugated and strong reinforcing nanofiller for polymer latex
    PR Sreenath, S Mandal, H Panigrahi, P Das, KD Kumar
    Nano-Structures & Nano-Objects 23, 100477 , 2020
    2020
    Citations: 30
  • Unique approach to debundle carbon nanotubes in polymer matrix using carbon dots for enhanced properties
    PR Sreenath, S Mandal, S Singh, H Panigrahi, P Das, AK Bhowmick, ...
    European Polymer Journal 123, 109454 , 2020
    2020
    Citations: 21
  • Multifunctional self-healing carbon dot–gelatin bioadhesive: Improved tissue adhesion with simultaneous drug delivery, optical tracking, and photoactivated sterilization
    M Aggarwal, H Panigrahi, DK Kotnees, P Das
    Biomacromolecules 25 (5), 3178-3189 , 2024
    2024
    Citations: 15
  • Jamming carbonaceous nanofiller in the continuous phase and at the blend interface for phenomenal improvement in the overall physico-mechanical properties of compatibilized …
    H Panigrahi, D Kumar
    Polymer 257, 125261 , 2022
    2022
    Citations: 10
  • Unveiling pressure-sensitive adhesiveness of a carbonized polymer dot
    S Mandal, H Panigrahi, KD Kumar, P Das
    Polymer 254, 125102 , 2022
    2022
    Citations: 7
  • Luminescent Carbon Dot-Graphene Oxide Epoxy Coatings: Enhanced Corrosion Protection and Detection
    D Daksha, TK Rout, AN Bhagat, BK Satpathy, S Mishra, H Panigrahi
    Langmuir 41 (28), 18447-18462 , 2025
    2025
    Citations: 5
  • The overall performance of graphene oxide-reinforced epichlorohydrin rubber nanocomposites: DK Kar et al.
    DK Kar, U Dutta, S Kumar, S Mishra, H Panigrahi
    Journal of Rubber Research 27 (1), 61-71 , 2024
    2024
    Citations: 5
  • Polypropylene-based thermoplastic elastomers: fundamental blending issues
    H Panigrahi, DK Kotnees
    Advances in Thermoplastic Elastomers, 177-216 , 2024
    2024
    Citations: 5
  • Bio-Nanocomposites Based on Polyvinyl Alcohol and Fuller Earth Nanoclay: Preparation, Properties and Its Application in Food Packaging.
    YA Ouma, SS Nayak, S Mishra, H Panigrahi
    Journal of Polymer Materials 41 (4) , 2024
    2024
    Citations: 4
  • In Situ Synthesized Fe/Mg-Doped Polyaniline–Polyimide Composite Coating for Superior Corrosion Protection
    SS Pradhan, JV Bharati, S Padhan, H Panigrahi, TK Rout, S Mishra
    ACS Applied Polymer Materials 7 (17), 11502-11513 , 2025
    2025
    Citations: 2
  • ZnO-Functionalized Carbon Dots/Poly (methyl methacrylate)-Grafted Natural Rubber Nanocomposites as an Efficient Absorbent for Industrial Dye Removal
    SS Nayak, S Padhan, J Gartia, S Mishra, DK Kotnees, H Panigrahi
    ACS Applied Engineering Materials 3 (11), 3834-3849 , 2025
    2025
    Citations: 1
  • Spectroscopy Analysis of Organic: Inorganic Hybrid Silica Particles
    H Panigrahi, S Mishra, SK Tripathy
    Sample Preparation Techniques for Chemical Analysis, 31 , 2021
    2021
    Citations: 1
  • Fuller's Earth Clay—Naturally Abundant, Environmentally Benign and a Low Cost Nano‐Rod Shaped Clay Explored as a Potential Reinforcing Filler for Natural Rubber Latex
    H Panigrahi, N Aich, A Kumari, B Kumar, R Kumar, DK Kotnees
    Polymer Engineering & Science , 2026
    2026
  • Effect of Nanosilica Concentration on the Mechanical, Viscoelastic and Morphological Properties of Polypropylene/Styrene—Ethylene/Butylene—Styrene Blend
    H Panigrahi, S Mishra, AN Tiwari, MP Singh
    Advanced Polymeric Systems, 71-83 , 2022
    2022